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Semiquinone Intermediates in the Two‐Electron Reduction of Quinones in Aqueous Media and their Exceptionally High Reactivity towards Oxygen Reduction
Author(s) -
Li Qian,
BatchelorMcAuley Christopher,
Lawrence Nathan S.,
Hartshorne Robert S.,
Compton Richard G.
Publication year - 2011
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201100174
Subject(s) - semiquinone , chemistry , reactivity (psychology) , anthraquinone , photochemistry , one electron reduction , oxygen , catalysis , inorganic chemistry , electrochemistry , electrode , redox , organic chemistry , medicine , alternative medicine , pathology
We report the catalytic anthraquinone‐mediated reduction of oxygen at a boron‐doped diamond electrode. Scheme of squares modelling confirms the existence of and reveals the role of the semiquinone intermediates, which are shown to have an exceptional reactivity towards oxygen (as compared to the di‐reduced anthraquinone).